VERSIONS: "buster bullseye bookworm"





  build-and-push-rootfs-archives:
    runs-on: vm-docker-build2
    outputs:
      archives_changed: ${{ steps.commit_archives.outputs.archives_changed }}
    steps:
      - name: Checkout source
        uses: actions/checkout@v3

      - name: Create output directory
        run: mkdir -p ./output

      - name: Build all Debian rootfs versions into volumes and extract
        run: |
          versions=($VERSIONS)
          for version in "${versions[@]}"; do
            echo "[INFO] Building $version..."
            volume_name="build_output_$version"
            docker volume create "$volume_name"

            docker build --build-arg VERSION=$version -t fithwum/debian-$version-base .

            docker run --rm --privileged \
              -v "$volume_name:/output" \
              -e VERSION="$version" \
              fithwum/debian-$version-base \
              bash -c "/scripts/bootstrap-rootfs.sh \"$version\""

            # Extract the output file from the volume
            container_id=$(docker create -v "$volume_name:/output" debian)
            mkdir -p ./output/$version
            docker cp "$container_id:/output/$version/debian-$version.tar.bz2" ./output/$version/
            docker rm "$container_id"
          done

      - name: Validate that archives exist for each version
        run: |
          IFS=' ' read -r -a versions <<< "$VERSIONS"
          for version in "${versions[@]}"; do
            path="./output/$version/debian-$version.tar.bz2"
            if [[ ! -f "$path" ]]; then
              echo "[ERROR] Missing archive: $path"
              exit 1
            else
              echo "[OK] Found: $path"
            fi
          done

      - name: Clone upload repo
        run: |
          GIT_CREDENTIAL="${{ secrets.GIT_TOKEN || secrets.GIT_PASSWORD }}"
          git clone --depth=1 "https://${{ env.GIT_USERNAME }}:${GIT_CREDENTIAL}@gitea.fithwum.tech/fithwum/debian-base.git" upload-repo

      - name: Clean old archives in upload-repo
        run: rm -rfv upload-repo/*/*.tar.bz2

      - name: Copy new archives to upload-repo
        run: |
          for filepath in ./output/*/debian-*.tar.bz2; do
            version_dir=$(basename "$(dirname "$filepath")")
            mkdir -p "upload-repo/$version_dir"
            cp "$filepath" "upload-repo/$version_dir/"
          done

      - name: Calculate and store sha256sums in upload-repo
        run: |
          cd upload-repo
          rm -f sha256sums.txt
          for tarball in */debian-*.tar.bz2; do
            echo "[INFO] Processing: $tarball"
            checksum=$(sha256sum "$tarball" | awk '{print $1}')
            echo "$checksum  $tarball" >> sha256sums.txt
          done
          echo "[INFO] SHA256 contents:"
          cat sha256sums.txt

      - name: Commit and push files if changed
        id: commit_archives
        run: |
          cd upload-repo
          git config --global user.name "${{ env.GIT_USERNAME }}"
          git config --global user.email "${{ env.GIT_EMAIL }}"

          if git status --porcelain | grep .; then
            git add **/*.tar.bz2 sha256sums.txt || true
            git commit -m "Update base images and checksum on $(date -u +'%Y-%m-%dT%H:%M:%SZ') [skip ci]"
            git push
            echo "archives_changed=true" >> $GITHUB_OUTPUT
          else
            echo "[INFO] No changes to commit."
            echo "archives_changed=false" >> $GITHUB_OUTPUT
          fi